The first organically templated linear metal selenate

An organically templated cadmium selenate of the formula [enH<SUB>2</SUB>][Cd(H<SUB>2</SUB>O)<SUB>2</SUB>(SeO<SUB>4</SUB>)<SUB>2</SUB>], I, has been synthesized by carrying out the reaction between CdO and H<SUB>2</SUB>SeO<SUB>4</SUB> in the presence of the amine in aqueous medium at 80°C. The structure of I involves isolated infinite [Cd(H<SUB>2</SUB>O)<SUB>2</SUB>(SeO<SUB>4</SUB>)<SUB>2</SUB>]<SUP>2−</SUP> chains running along the c-axis, with the protonated ethylenediamine molecules between them. Crystal data for I are as follows: Monoclinic, space group=C2/c, a=10.5059(7), b=10.3605(7), c=10.6028(7)Å, β=94.666(2)°, V=1150.25(13)Å<SUP>3</SUP>, z=8, R<SUB>1</SUB>=0.0237, wR<SUB>2</SUB>=0.0500 (for all data)